Damp mines to be put right (7)
I believe the answer is:
moisten
'damp' is the definition.
(I've seen this before)
'mines to be put right' is the wordplay.
'be put right' is an anagram indicator.
'mines'+'to'='minesto'
'minesto' is an anagram of 'MOISTEN'.
(Other definitions for moisten that I've seen before include "What one's eyes may do!" , "Make damp or slightly wet" , "Add water - dampen" , "water a bit" , "It's on me (anag)" .)